Transcript
HIGHLIGHTS
RDR 4002
• High-speed Internet communications • Pay-per-view
Return Digital Receiver
The highly efficient Harmonic RDR 4002 return digital receiver uses state-of-the-art technology to increase system reliability and enables operators to expand network services. The use of Harmonic’s digital return path solution in a network offers advantages including:
• Video-on-demand • Telephony
• High package density (ten RDR 4002 units in a three rack-unit platform provide 40 return data streams)
• Security
• Outstanding performance over long links, since the performance of a digital return transmission system is independent of link loss over the operating range of the receiver
• Alternative access
• Increased system reliability and reduced operational costs as a result of greater network segmentation
• Local origination • Direct customer feeds
The RDR 4002 works in conjunction with Harmonic’s NDT series return digital transmitters. It mounts in the HLP 4200 chassis and takes two optical data streams at up to 3.1 Gbps. Each input is demultiplexed into its two component data streams, resulting in four independent data streams received per module. These are converted back to analog waveforms by four digital-to-analog (D/A) converters. The four analog output channels from the RDR4002C/E have a 5-65 MHz passband and the RDR4002A has a 5-42 MHz passband.. The RDR 4002 uses advanced digital signal processing to optimize dynamic range. Auto-switching capabilites allow the RDR 4002 to function as a standalone unit or in a redundant pair configuration. One RDR 4002 is used for a primary fiber path and the second for the backup fiber path. The RF outputs of the two units are combined. Hub RDR 4002
5-42 MHz or 5-65 MHz
Standard Configuration 1
For maximum reliability, the RDR 4002 units comprising the redundant pair can be located in different platforms, or even different racks. Automatic switching is triggered by link loss, low optical input or high BER. The RDR 4002 supports hot swapping, which allows a card to be added or removed without disrupting service. This results in improved network management and availability. The RDR 4002 also allows the operator to set the optical level at which an alarm is generated.
Node
HLN 314x NDT
NDT
RDR 4002
Return Digital Receiver
O p ti c al I n pu t
Li n k Pe rfor m an ce 2
Number of Fiber Optic Inputs
2
Maximum Input
0 dBm
Minimum Input RDR 4002A RDR 4002C RDR 4002E
-20 dBm -18 dBm -18 dBm
Wavelength
1250 to 1620 nm
Input Line Rate RDR 4002A RDR 4002C RDR 4002E
2.1 Gbps 3.1 Gbps 3.1 Gbps
4
Passband RDR 4002A RDR 4002C RDR 4002E
5-42 MHz 5-65 MHz 5-65 MHz
Impedance
75 Ω
Flatness
37 to 39 dB 29 to 31 dB 37 to 39 dB
Dynamic Range RDR4002A RDR4002C RDR4002C RDR4002E RDR4002E
11 dB @ NPR=41 with 5 to 42 MHz passband3 26 dB @ NPR=41 with 5 to 42 MHz passband4 20 dB @ NPR=41 with 5 to 65 MHz passband4 12 dB @ NPR=41 with 5 to 42 MHz passband4 9 dB @ NPR=41 with 5 to 65 MHz passband4
Pow e r R e q u i r e m e nt s
R F O u tpu t Number of Analog Outputs
Link Gain RDR 4002A RDR 4002C RDR 4002E
Input Voltage
+24 VDC; supplied by HLP 4200 bus
Consumption
15 W maximum
E n v i ro n m e ntal Operating Temperature Range
0° to 50° C 32° to 122° F
± 1 dB from 5 to 65 MHz
Storage Temperature Range
-40° to +85° C -40° to +185° F
Channel-to-channel isolation
60 dB
Operating Humidity
90% non-condensing
RF output connector type
Female F
RF output return loss
16 dB
RF output level with 0 dB attenuator setting
-35 dBmV/Hz min for a Gaussian noise signal at -20 dBm of received optical power
RF attenuator range
0 to 17.5 dB
RF attenuator step size
0.5 dB
Spurious noise
-60 dBc max
Switching time primary to backup
50 mS max
Switching time backup to primary
2 to 4 S
1
Ph ys i c al Dimensions (WxHxD)
1.25” x 4.4” x 11.5” (3.2 cm x 11.2 cm x 29.2 cm)
Weight
3.3 lbs (1.5 kg)
Mounting
HLP 4200 platform, via HMC 4008 module carrier
Element Management Monitorable and controllable via NETWatch Site Controller
O p ti c al I nte rface Connector Type RDR 4002x-AS
SC/APC
RDR 4002x-AE
E2000
Notes: 1. When used in conjunction with a corresponding Harmonic digital transmitter. For a list of compatible digital transmitters, refer to the user’s manual for RDR 4002.
Us e r I nte rface Front Panel Bi-Color Status LED Module Selection Indicator
Normal = Green, Alarm = Red Yellow LED
Monitor Point Level Return Loss Impedance Connector Type
-20 dB +/- 1.0 dB relative to output -16 dB 75Ω Female F
2. RDR 4002A link specifications include NDT 3049A and NDT3349A transmitter. RDR 4002C link specifications include NDT 3147C transmitter. RDR 4002E link specifications include NDT 3249E transmitter. 3. Dynamic range specified with Gaussian noise loading and -27 dBmV/Hz at receiver output. 4. Dynamic range specified with Gaussian noise loading and -41 dBmV/Hz at receiver output.
2 549 Baltic Way Sunnyvale, CA 94089 U.S.A. 1 800 788 1330 or 1 408 542 2500
© 2008 Harmonic Inc. All rights reserved. Harmonic and the Harmonic logo are trademarks, registered trademarks or service marks of Harmonic Inc. in the United States and other countries. Other company, product and service names mentioned herein may be trademarks or service marks of their respective owners. All product and application features and specifications are subject to change at Harmonic’s sole discretion at any time and without notice. 08.05.14
